High-strength conductive polycarbonate alloy environmental protection composite material and preparation method thereof
A polycarbonate and composite material technology, applied in the field of polymer materials, can solve the problems of conductive filler stress concentration, lower mechanical properties, high density, etc., and achieve the effect of improving interface strength, improving electrical conductivity, and high strength
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Embodiment 1
[0029] Polycarbonate resin 60kg, ASA resin 25kg, carbon nanotube CNT100 3kg, Irganox 1680.3kg, Irganox1010 0.4kg, Ag80 0.3kg, antibacterial agent HN-300 0.3kg. Weigh each component according to the weight percentage; dry and dry the weighed polycarbonate resin at 100°C for 4 hours, dry and dry the weighed ASA resin at 60°C for 6 hours; The polycarbonate resin, ASA resin and various other additives weighed are mixed by a high-speed mixer for 10 minutes to form a mixed material; the mixed polycarbonate resin, ASA resin and additives are put into the twin-screw extrusion In the hopper of the machine, through melting reaction, carbon nanotubes are added in the third zone, the fourth zone or the fifth zone by side feeding, and then extruded and granulated. The twin-screw extruder includes six zones, wherein the temperature and screw speed of each zone are respectively: the temperature of the first zone is 100-130°C, the temperature of the second zone is 240-250°C, the temperature o...
Embodiment 2～ Embodiment 6
[0031] Examples 2-6 are the same as Example 1 in terms of preparation steps and processing temperature, the difference is whether the carbon nanotubes are surface treated or not and the amount of each raw material added. In Examples 2 to 6, the conductive filler is a single-walled carbon nanotube treated with a silane coupling agent KH550, and the bulk density is 1.7 g / cm 3 ~2.0g / cm 3 .
Embodiment 2
[0032] The amount of addition in Example 2 is 70kg of polycarbonate resin, 10kg of ASA resin, 4kg of surface-treated carbon nanotube CNT100, and drying at 60°C for 8 hours to obtain the final product, 0.3kg of Irganox168, 0.3kg of Irganox1330, 0.2kg of E44, and 0.2kg of TGIC , antibacterial agent IONPURE 0.6kg. The specific steps are: dissolve carbon nanotubes CNT100 in deionized water, disperse by ultrasonic for half an hour, then add KH550 into the aqueous solution of carbon nanotubes, stir at room temperature for 8 hours, then pour it into a separation tube, and centrifuge The machine was centrifuged at 4000r / min for 10min, washed 3 times, and the upper solution was removed to obtain a black precipitate, which was placed in a vacuum drying oven.
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